Senior Principal Systems Engineer - Hydrogen & Fuel Cells

ALTEN; Horsham; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Private MedicalInsurance

Employee assistance programme

Life insurance & Pension Scheme

Social atmosphere & team events

Flexible working (role dependent)

Job summary

ALTEN, a global engineering and technology consultancy, is seeking a Principal Systems Engineer for its Horsham team. You will lead the development and integration of advanced fuel cell and electrolysis systems, shaping system architecture and technology strategy across multiple programmes.

You will act as a technical authority, providing governance, mentoring engineers, and engaging with customers and partners to drive the industrialisation of next‑generation clean energy solutions.

Qualifications

• Bachelor’s or Master’s degree in Engineering or equivalent military experience.
• Significant experience leading systems engineering on complex programmes.
• Expertise in system architecture, integration, and product development.
• Track record of technical leadership across multiple projects.
• Experience with SOFC/SOEC technologies and hydrogen energy systems.
• Knowledge of MBSE methodologies and tools applied to system design.
• Experience working with external partners, customers, and research organisations.

Responsibilities

• Act as the technical authority for system architecture, performance, and integration across multiple fuel cell and electrolysis programmes.
• Lead the development, review, and approval of system architectures, ensuring alignment with objectives.
• Provide technical governance across projects, including design reviews and risk management.
• Lead resolution of complex cross‑functional system issues with significant business impact.
• Influence roadmaps and technology strategies with system‑level expertise.
• Develop and embed digital‑first approaches to stack and system development.
• Lead verification and validation planning, execution, and interpretation.
• Support customer engagements, technical proposals, negotiations, and partnerships.
• Drive identification and mitigation of system‑level risks.
• Mentor engineers and develop future technical leaders.
• Contribute to improving systems engineering processes and best practices.
• Support IP development through patentable innovations.
• Build relationships with customers, partners, and academia.

Skills

System design

System integration

Thermo-fluids

Electrochemistry

System dynamics

Verification & validation

MBSE methodologies

Stakeholder management

Leadership & mentoring

Education

Bachelor’s or Master’s degree in Engineering

Military experience (equivalent)

Tools

MBSE tools

Job description

ALTEN, a global engineering and technology consultancy, is seeking a Principal Systems Engineer for its Horsham team. You will lead the development and integration of advanced fuel cell and electrolysis systems, shaping system architecture and technology strategy across multiple programmes.

You will act as a technical authority, providing governance, mentoring engineers, and engaging with customers and partners to drive the industrialisation of next‑generation clean energy solutions.